Ash, S. 1994. The first occurrence of Czekanowskia (Gymnospermae, Czekanowskiales) in the United States. Rev. Palaeobot. Palynol. 81: 129-140.

Harris, T.M. 1935. The fossil flora of Scoresby Sound, East Greenland. Part 4: Ginkgoales, Coniferales, Lycopodiales, and isolated fructifications. Medd. Grønland 85:3: 1-114.

Harris, T.M. 1951. The fructification fo Czekanowskia and its allies. Phil. Trans. Roy. Soc. London 235B:483-507.

Harris, T.M. and J. Miller. 1974. The Yorkshire Jurassic Flora. IV. 2. Czekanowskiales. Brit. Mus. Nat. Hist. London. pp. 79-150.

Heer, O. 1876. Beiträge zur Jura-Flora Ostsibiriens und des Amurlandes. Mém. Acad. Imp. Sci. St. Pétersb. 7:22: 1-122 + 31 pls.

Heer, O. 1880. Nacträge zur Jura-Flora Sibiriens. Mém. Acad. Imp. Sci. St. Pétersb. 7:27:10: 1-34 + 9 pls.

Kerp, H. 1988. Aspects of Permian palaeobotany and palynology. X. The west and central European species of the genus Autunia Krasser emend. Kerp (Peltaspermaceae) and the form genus Rhaciphyllum Kerp (callipterid foliage). Rev. Palaeobot. Palynol. 54:249-360.

Krassilov, V.A. 1968. A new group of Mesozoic gymnosperms: Czekanowskiales. Akad. Nauk SSSR Doklady, Earth Sci. Sect. 178: 223-226.

Krassilov, V.A. 1970. Approach to the classification of Mesozoic "Ginkgoalean) plants from Siberia. Palaeobotanist 18:1:12-19 + 3 pls.

Krassilov, V.A. and V.I. Burago. 1981. New interpretations of Gaussia (Vojnovskyales). Rev. Palaeobot. Palynol. 32: 227-237.

Mamay, S.H. 1976. (publ. 1978). Vojnovskyales in the Lower Permian of North America. Palaeobotanist 25: 290-297.

Meyen, S.V. 1984. Basic features of gymnosperm systematics and phylogeny as evidenced by the fossil record. Bot. Rev. 50: 1-112.

Neuberg, M.F. 1955. New representataives of the Lower Permian flora of Angara. Aka. Nauk SSSR Doklady, Repts. Paleont. 102: 613-616.

Pant, D.D. 1957. The classification of gymnospermous plants. Palaeobotanist 6: 65-70.

Rothwell, G.W., G. Mapes and R.H. Mapes. 1996. Anatomically preserved Vojnovskyalean seed plants in Upper Pennsylvanian (Stephanian) marine shates of North America. J. Paleontol. 70:1067-1079.

Samylina, V.A. and A.I. Kiritchkova. The genus Czekanowskia Heer: principles of systematics, range in space and time. Rev. Palaeobot. Palynol. 79: 271-284.

Zalessky, M.D. 1912. Sur le Cordaites aequalis Goeppert sp. de Sibérie et sur son identité avec la Noeggerathiopsis hislopi Bunbury sp. de la flore du Gondwana. Comité Géol. Russie Mém. (N.S.) 86:1-43.